'Mustard' are herbaceous annual plants in the family Brassicaceae grown for their seeds which are used as a spice. Mustard plants are thin herbaceous herbs with yellow flowers. The leaves of the plant are toothed, lobed, and occasionally have the larger terminal lobes. Plants can reach 16 cm (6.3 in) in length. The yellow flowers grow in spike like clusters of 2–12 flowers and individual flowers are 8 mm (0.3 in) in diameter. The seeds are red to brown in color and produced from each flower. Mustard can grow 1.2 - 2m (4 – 6.6 ft) in height and as an annual plant, survives only one growing season. The mustard plant can be grown in sandy, loamy or clay soils with a pH between 4.9 and 8.2 and prefers moist soil. The best method of preventing weed growth in a mustard field is to plant seeds at the appropriate depth.

'Mushroom' are the fruiting bodies of some members of a lower group of plants known as fungi. The fungi are characterized by the absence of chlorophyll and undifferentiated bodies except the spore bearing structures. The fruiting bodies, mushrooms, are fleshy spore bearing structures of the fungi. The economic importance of mushroom lies primarily in their use as food for human consumption. The exotic flavor, taste and fleshiness of mushroom have made it an important delicacy in human diet. Mushroom is considered to be a complete, healthy food and suitable for all age groups.The productivity of mushroom is higher than any other crop. Food, nutritional and medicinal values apart, mushroom growing can be an efficient means of waste disposal mainly agricultural wastes, since it can use the wastes as medium of growth and thus mushroom cultivation is considered as eco-friendly.